US Patent Issued to TDK on Sept. 29 for "R-T-B based permanent magnet and method for manufacturing same" (Japanese Inventor)

ALEXANDRIA, Va., Sept. 30 -- United States Patent no. 12,749,603, issued on Sept. 29, was assigned to TDK Corp. (Tokyo).

"R-T-B based permanent magnet and method for manufacturing same" was invented by Yoshinori Fujikawa (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "An R-T-B-based permanent magnet having improved magnetic properties contains R that represents at least one rare earth element essentially including Nd or Pr, T that represents at least one iron-group element essentially including Fe, B that represents boron, and M that represents at least one element selected from Ga, Al, Cu and Si. The R-T-B-based permanent magnet includes main-phase grains which include R2T14B crystals and two-grain gr...